Electric motor.



No. 67|,662. Patented Apr. 9, I90I. H. P. WHITE.

ELECTRIC Moon.

(Appl ca xon filed Oct 1899 No. 67:,662. Patented Apr. 9, |901.

H. P. wHlTE.

ELECTRIC MOTOR.

(Application filed Oct. 5. 1899.)

(No Model.) I 2 Sheets-Sheet 2.

Witlgesses: I www. ggw@ UNITED STATES PATENT EEICE.

HENRY P. WHITE, OF KALAMAZOO, MICHIGAN, ASSTGNOR OF THREE- FOURTHS TO CHARLES D. FULLER, OF SAME PLACE.

ELECTRIC MOTOR.

SPECIFICATION forming part of Letters Patent N0. 671,662, dated April 9, 1901.

Application filed October 5, 1899. Serial No. 732,788. (No model.)

T0 all whom t may concern:

Be it known that I, HENRY P. WHITE, a citizen of the United States, residing at the city of Kalamazoo, in the county of Kalamazoo and State of Michigan, have invented certain new and useful Improvements in Electric Motors, of which the following` is a specification.

This invention relates to improvements in electric motors.

The objects of this invention are, first, to provide an electric motor in which it is possible to control the speed without waste of energy; second, to provide an improved means of utilizing a differential movement in electric motors; third, to simplify and improve the construction of motors in which both the field-magnet and armature are rotary; fourth, to provide an improved connectinggearing between a rotary field-magnet and a rotary armature to facilitate the coaction of the same, and, fifth, to provide an improved connecting-gearing between a rotary fieldmagnet and a rotary armature to facilitate the coaction of the saine in securing variable speeds.

Further objects will definitely appear in the detailed description to follow.

l accomplish these objects of my invention by the devices and means and mechanism described in this specification.

The invention is clearly dened and pointed out in the claims.

A structure fully embodying the features of my invention is illustrated in the accompanying drawings,fcrminga part of this speciication, in which- Figure l is a vertical detail longitudinal sectional view taken on a line corresponding to lines l l of Figs. 2 and 3, certain portions being shown in full lines. Fig. 2 is a transverse vertical detail view, partially in section, on line corresponding to line 2 2 of Fig. l. Fig. 3 is also a transverse detail view, partially in section, on line 3 3 of Fig. l. Fig. 4 is an enlarged detail view of the worm-gear connection for shifting the friction-gears to vary the speed.

In the drawings the sectional views are taken looking in the direction of the little arrows at the ends of the section-lines, and

similar letters of reference refer to similar parts throughoutthe several views.

Referring to the lettered parts of the drawings, A is the base, supporting the remaining parts of the machine, which is preferably made hollow and of cast metal. On this are supported pillow blocks or brackets A A. Suitable bearings are provided for the shaft C of the machine.

On the shaft C is supported the armature H, with the commutator I, which are fixed thereto so that they may revolve therewith. The fieldmagnet G is supported by suitable spiders G G", which havesuitable hubs 011 the shaft, so that it. revolves freely thereon. At the outer end of the shaft is provided a ball-bearing for the various parts, made up of a` central block J, which is Vlixed on the shaft C, and an outer block J', supported by brackets, there being ball-races between the two, and a collar Jl is supported ou the outer end of the spider G,`and a cushion of leather or suitable material is between the collar J" and the hub of spider G. On the hub to the spider G" are supported colnmutator-rings 9" fl, against which rest brushes 1'" r", respectively. The electrical connection for operating the machine is to the brushes r" 1", and wires connect the rings 1' r to the brushes n n', respectively, and other wires are connected to the field-magnet from these same branches to excite the same. The winding of the fieldmagnct and the armature is entirely immaterial, so that they coact as in a motor of the usual construction.

On the hub of the spider G is supported a frictionwheel D, having a concave annular face corresponding in cross-section to a portion of an arc of a circle.

Secured to the shaft C and facing opposite to wheel D is a similar friction gearwheel D', symmetrical therewith. Frictionwheels E' E' are carried on pivots a -in rock-shafts E and serve as a gear connecting the one to the other. 0n the rock-shafts E are provided hubs E", bearing worin-gears, which are actuated from worms N on shaft F, the worms on these shafts being oppositely threaded to shift the friction-wheels E from or toward each other within the hollow faces of the gean IOC) wheels D D', so that they exactly coact together. The shaft F is controlled by a handwheel F. The ends of the rock-shafts E are supported in suitable brackets B B' on the base A, the brackets being connected by a cross-piece BH at the top to `give them stability and strength.

The outer end of the hub of the friction- Wheel D' is provided with a collar M, having ball-races, and a sleeve K is provided having a suitable easing K', which surrounds the ballrace and contains collar M', also containing a ball-race corresponding to that on the collar M. A screw L is provided which engages the screw-thread Within the sleeve K and is actuated by a hand-wheel L' at the outer end to put pressure on the same to force the various ballbearings snugly together, and so compensate for any wear. The sleeve K is provided with a suitable key-seat a', and u is supported on the bracket A" to engage the same and guide it into position.

In operation with the parts arranged as I have indicated the armature will revolve in one direction and the field-magnet in the opposite direction. The relative speed of the armature and the field-magnet is regulated by the friction-gearing which I have shown, and it will be observed that as the motion of the field-magnet is lessened or approaches the stationary the greater will be the speed of the armature, though it will then run with less torque, and vice versa, so that by increasA ing the speed of the field-magnet the speed of the armature will be lessened,b ut its power increased, and this is accomplished in this particular instance by the changeable-speed gear shown, which I believe is especially adapted to the purpose. I wish to say, however, that other means might be employed for connecting the revoluble field magnet and armature together so that they will coact as I have here indicated.

I believe that I have shown the best embodiment of my invention, but desire to state that it can be greatly varied. The style of motor employed can be varied indefinitely so long as both the held-magnet and the armature revolve, it being easily possible to use any type or style of either alternating or direct current electric motor in this connection and control its eflieiency by the means I have adopted. I do not deem it necessary to illustrate these various types of motors in this connection, as it is impossible to claim each one specifically in this patent, and I do not show the different gearings by which the revolving iield-inagn et and the revolving armature may be connected. I show the structure which I believe from my experience to be the best. I desire in this connection to be understood as embracing these different constructions within my broadest claim, and I also submit herewith a specific claim to the construction I have shown. I desire to state in this connection that the power for my improved motor the shaft @,or the entire in otor can be mounted directly in a lathe and connected directly to the lathe-spindle, or it can be connected directly without any gearing for use in drillpresses or other similar tools. It could also be connected directly to the axle of a streetear. In fact, the motor can be utilized directly on any shaft where itis desired to apply power without resorting to a main-shaft and counter-shaft construction, thus providing a new and valuable means for doing away with back gearing, cone-pulleys, and intermediate sha'fts, where a variable speed is neeessary.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In an electric motor, the combination of the base A; brackets A; shaft C supported by said brackets; an armature II and commutator-sections I supported on said shaft; a revoluble fieldmagnet G supported by suitable spiders G' G having suitable hubs supported on the shaft C by suitable journalbearings; colnrnutator-rings o", r' supported on the hub of spider G" with brushes 1" 0"" delivering currentthereto; brushes n, n carried by the spider G' and resting on thesegment I of the comm utator; connections from the rings r, o" to the brushes and to the coils of the field-magnet; friction gear-wheel D supported on hub of spider G having an annular concave face, the cross-section of which corresponds to the are of a circle; an opposite friction-wheel D' symmetrical thereto and fixed on the axle C; ball-bearings between the variousparts; a sleeve K; a screw L within said sleeve with hand-wheel I] for adjusting the various parts together upon the ball-bearings; friction-wheels E/ Esupported on pivots on transverse rock-shafts E; and worm-gears for actuating the rock-shafts to rock them to and from each other so that there is a changeable speedgear coupling between the friction-wheels D, D whereby the connection can be varied, all coacting substantially as described for the purpose specified.

2. In an electric motor the combination of a suitable shaft with bearings for its support; an armature and commutator fixed on said shaft; a revoluble field-magnet supported by suitable journal-bearings on the said shaft; eommutator-rings carried by the field magnet; brushes delivering current thereto; a friction gear-wheel having an annular concave surface, the cross-section of which corresponds to an arc of a circle connected to the revoluble field-magnet and adapted to rotate around the shaft; an oppositely-situated symmetrical friction-wheel fixed on the said shaft; intermediate adjustable friction-wheels between the said concave friction-wheels for varying the connection and relative speed, all eoacting substantially as described for the purpose specican be utilized by the pulley C on the end of lied.

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3. In an electric motor,`the combination of' a suitable shaft with bearings for its support; an armature fixed on said shaft; a revoluble iield magnet supported by suitable journal-bearings on the said shaft; a friction gear-wheel having an annular concave surface, the cross-section of which corresponds to an arc of a circle connected to the revoluble field magnet and adapted to rotate around the shaft; an oppositely-situated symmetrical friction-wheel fixed on the said shaft; intermediate adjustable friction-Wheels between the said concave friction-Wheels for varying the connection and relative speed, all coactin g substantially as described for the purpose specified.

4. In an electric motor, the combination of a suitable shaft with bearings for its support; an armature fixed on said shaft; a revoluble field-magnet supported by suitable journal-bearings upon the said shaft; a gearing carried by said armature; a gearing carried by said held-magnet; and an intermediate changeable-speed gear connecting the same in such manner that the gear connection varies in relation to the gear-centers of the gears of said Held-magnet and armature whereby the full power of the motor is delivered to the shaft without substantial loss, for the purpose specified.

5. In an electric motor, the combination of a revoluble armature; a revoluble field-mag net; gearings connected to each of the same; and an intermediate independently supported changeable-speed gear constructed in such manner that the gear connection varies in relation to the gear-centers of the gears of said field-magnet and armature whereby the full power of the motor is delivered to the shaft without substantial loss, for the purpose specified.

G. In an electric motor, the combination of a revoluble armature; a revoluble field-magnet; friction gear wheels connected with each, having their faces opposite; and the opposite faces bearing oppositely-situated an* nnlar concave rings; friction-gears supported between the same on opposite sides thereof, on suitable transverse rock-shafts to transfer the motion from one to the other; worm-gears on said rock-shafts; and a suitable shaft with worm for actuating the gears to turn the friction-wheels to and from each other to vary the delivered speed of the motor without waste of power.

7. In an electric motor the combination of an armature, a field-magnet, a gearing carried by said armature, a gearing carried by said field-magnet and an intermediate gear connecting the same in such manner that the gear connection may vary in relation to the centers of the gears of said field-magnet and armature.

S. In an electric motor the combination of an armature, a field-magnet, a gearing car ried by said armature, a gearing carried by said field-magnet and an intermediate independently supported gear connecting the same in such manner that the gear connection may vary in relation to the centers of the gears of said field-magnet and armature.

9. The combination of a motor comprising a rotative armature and rotative field which turn in opposite directions, shafts connected with and driven by said armature and field, friction-disks connected respectively with said armature and field, an oscillatory disk which has opposite peripheral contact with the opposing` surfaces of said disks and oscillates on an axis transverse to its axis of rotation, and means giving oscillatory motion to said oscillatory disk. K

I0. The combination of a motor comprising a rotative armature and rotative field which turn in opposite directions, shafts connected with and driven by said armature and field, friction-disks connected with shafts and rotating about a common axis, a plurality of oscillatory disks which have opposite peripheral engagement with the opposing faces of said disks and rotate on axes transverse to their axes of rotation7 and means for simultaneously oscillating said several oscillatory disks about their transverse axes.

In witness whereof I have hereunto set my hand and seal in the presence of two witnesses.

HENRY r. WHITE. LL. s i

Witnesses:

NETTIE I?. CARRUTHERS, Oris A.. EARL. v 

